Other mistake: Jacob takes Cal shopping. In the shot during which Jacob says to Cal "the skin under your eyes is starting to look like Hugh Hefner's ball sack," the film is flipped and the viewer is watching a reverse (or mirror) image. This is revealed principally by the fact that the emblem on Cal's Polo shirt is on the right side of his chest as opposed to his left.
Add timeJW Pepper
Continuity mistake: In the scene where Cal and his wife are sitting in the classroom whilst attending Robbie's Parent/Teacher meeting, when the teacher initially writes the word 'asshole' on the board, it appears to be written differently on three separate occasions during the same scene.